Standard Guide for Determination of Precision and Bias of Methods of Committee D221

This standard is issued under the ﬁxed designation D 3670; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.